Brooder stove



- 642,565 Sept 1927' 4 J. B. SMITH v BROODER STOVE Filed Oct. 1, 1926 2S e ts-Sheet 1 Sept. 13, 1927.

Witness 69:14.)

J. B. SMITH BROODER STOVE Filed Oct. 1, 1926 2 Sheets-Sheet 2 attoqmup{/2 I I I mma-wmm Patented. Sept. 13, 1927.

' UNITED STATES JOSEPH B. SMITH, or SALT LAKE orrY, UTAH.

BROODER STOVE.

l cationfiled October 1, 1926, Serial No. 138,994. I

' The invention relates to improvements in heaters designed primarilyfor .poultry breeders, and my principal aim is toprovide a uniqueconstructionand relation Otdampers for attaining the desired ends,provision being made whereby upon heating of the stove to apredetermined extent, the draught thereto will be cut oil, one damperplate. will be substantially closed across the smoke outlet,'anotherdamper plate will be opened to admit air into the smoke outlet, andopenings in the first named'damper plate willbe exposed,so that some ofthe air enter-. ing said smoke passage, may descend to cool the'fire,while the'remaining air entering the smoke passage, may ascend toproduce effective ventilation of the brooder stove and house.

.With the foregoing and minor objects in view, the invention resides inthe novel subject matter hereinafter described and claimed, thedescriptionbeing supplemented by the accompanying drawings.

Figures 1 and 2 are side elevations partly broken away and in section,looking in different directions, the hover being omitted from theseviews.

' Fig, 3 is a vertical sectional view taken substantially on line 3.3 of1;

.Fig. is a horizontal section on line 1 /1 of Fig. 2;

' Fjg. '5 is a small side elevation of the stove with the hoverconnected therewith,the latterbeing shown in section.

- Inthe drawings above briefly described, 6 designates the baseofthe-stove, supporting the ashpit 7 from which. thesubstantiallycylindrical body 8 rises, said body having a fuel inletdoor 9 atany suitable point, preferably near its upper end andbeingprovided with an appropriate grate 10, Any desired provisionmayof coursebe made for shaking this grate. ll designates a doo'rfor removing ashesfrom the ashpit Z, and it will be understood that the bottomfofthisfashpit is spaced above the brooder floor by the based, so thatthereis no danger of fire. Moreover, this base is formed with openings 12which permit passage of air under the ashpit, keeping the samecomparatively cool.

The stove is provided with two downdraught passages 13 whose lower endsopen under the grate 10. The upper ends of these passages are controlledby two dampers 14 carried by the outer end of a pair of levers 15, theselevers being suitably mounted at 16 upon the upper end of the stove. Anoperating'rod 17 is appropriately connected with the inner ends of thelevers 15 and is automatically operated by means hereinafter described,to control the draught to the fire. 18 designates a preferablyrectangular smoke outlet member which is appropriately mounted uponthestove body 8, the upper end of this member 18 being preferably providedwith a collar or the like to connect with an ordinary smoke pipe 20,leading to any remote point outside of the brooder. The member 18 isformed with an air inlet opening 21, and within this member, near theopening, are two damper plates 22 and 23.

The plate22 is impertorate and is pivoted on a horizontal axis 2 1 aboutone inch below the lower edge of the opening 21, said plate when in thedotted line position of Fig. 3 serving to close the opening 21 againstentrance of air. The reason I pivot this damper plate v22 below thelower edge of opening 21 is to form a'pocket to catch any sparks thatmay come down the chimney, thus preventing danger of fire.

An arm 25 is secured to and projects outwardlytrom the damper plate 22,said arm being pivoted to the upper end of a rod 26 which is operativelyassociated at its lower end with an appropriate thermostat 27 suitablysecured to the stove. It desired, any

suitable provision (not shown) may bemade for extending or retractingthe length of the rod 26 to control the automatic operation of thedamper plate 22, under the influence of thethermostat 27. I

A second arm 28 projects outwardly'from the damper-plate 22 and ispivoted to the upper end of the rod 17 By this provision, when thethermostat 27 expands under redeter nined heat and moves the damper pate 22 inwardly to admit air through the opening 21, the arm 28 pullsupwardly upon the rod17, thus actuating the two levers 15 to close thedampers 14;, thereby cutting off the draught to the fire. Similarly,when the thermostat contracts" and the damper plate 22 is consequentlymoved to or toward the dotted line position of Fig. 3, the arm 28 androd 17 cause such movement of the levers 15, as to again open thedraught controlling dampers 14. i

The damper plate 23 hangs vertically in 'the'd'otted line position ofFig. 3, when the plate 22 is closed, said plate 23 being then positionedat the inner side of said plate 22. The pivotal mounting Q9 of plate 23is above the upper end at the plate 22 and also above the opening and itwill be observed also from Fig. 3 that above said plate 22, the plate:23 is formed with a relatively large opening- 30, while it is formedwith a smaller opening 3 below the upper end of plate The movementsimparted to the plate 22 by the thermostat 27, control the movements ofthe plate 23, and as said plate 22 is moved inwardly to the full lineposition of Fig. 1- it swings the plate 23 to an oblique position acrossthe smoke outlet member 18. \Vhen this position is reached, bothopenings 30 and 31 are exposed. Thus, the air entering through theopening 21 may pass through the opening- 230 and while some of this airmay descend through the opening 31 to cool the tire, the remainder ofsuch air will pass upwardly through the smoke outlet, thus carrying ofiall foul air from the breeder stove.

An appropriate supporting ledge 32 is provided. near the upper end ofthe body 8 for the purpose of supporting a sheet metal hover 33, said,hover declining outwardly from the upper end of the stove to a planespaced a desired distance above the hrooder floor. Under this hover, thestove is provided with an air heating drum 34 which extends around aportion of its circumference, said drum having an inlet 35 at its lowerend for fresh air from any desired source. The upper end of the drum 34however, is open so that the fresh air which enters through the inlet 35and is warmed in the drum 34, will be discharged under the hover andwill conserpiently be downwardly directed onto the chicks.

Any appropriate mechanical details may be utilized in the manufacture ofthe heater. For instance, some parts may he made of castings or sheetmetal, some parts may be either integral with others or formedseparately. sectional construction may be used whenever advantagreons.and parts may he secured by riveting, welding. bolting or in any desiredmanner. such details being left to the .manutacturer for selection.Moreover, it may be explained that provision may be made permittingraising and lowering of the hover 33 ii" desired. Here again, anyadequate mechanical provision may be made for the purpose.

Excellent results are obtainable from the general construction shown anddescribed and such construction may therefore be followed. llowever.within the scope of the invention as claimed, variations may of coursebe made.

I claim:

1. In combination with a substantially vertical smoke outlet passagehaving an air,

inlet opening in one vertical. side; a damper plate pivoted in saidpassage on a. horizontal axis spared below said opening and in parallelrelation with said one side, said damper plate in one position being;:nlapted to close said o iening, a second damper plate pivotally hung insaid passage upon an axis spaced above said opening and the upper end ofthe first named damper plate, said second plate contacting with theinner side of said first named plate to be swung by the latter to anoblique position across the passage. said second plate having an openingin its lower end and an opening in its upper end above said air inletopening, said lower and upper openings being: ex 'iosed when said seconddamper plate is in said oblique position, and operating means connectedto the first named damper plate.

2. In con'ibination with a smoke outlet passage having an air inletopening in one side; a damper plate pivoted in said passage on atransverse axis at one side of said opening, said damper plate in oneposition serving to close said opening, a second damper plate pivotallymounted in said passage upon a transverse axis near the opposite side ofthe openin said second damper plate contacting with the inner side ofthe first named damper plate to be swung by the latter to an obliqueposition across the passage, said second plate having an opening in itsfree end and a second opening in its pivoted end, both of these openingsbeing exposed when said second damper plate is in said oblique position,at which time these openings are disposed at opposite sides of thecontacting portion of the first named damper plate, bot-h openings ofthe second damper plate being closed by the first named plate and theaforesaid side of the smoke passage when said plates lie parallel withsaid side, and operating means connected to said first named damperplate.

In testimony whereof I have hereunto aflixed my signature.

JOSEPH B. SMITH.

